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LEWELLYS F. BAKKEE 



V. Pathological Anatomy and Histology 



of Tetany 



The pathological changes that have been observed in the parathyroid 

 glands in tetany and in other conditions are fully described in the article 

 by Oscar Klotz in this system (q.v.). Hemorrhages, scars, cysts, atrophies, 





Fig. 1C. The shadow pictures represent the greatest cross section of the para- 

 thyroid gland magnified about eight times, (a) Average size of normal parathyroid 

 gland of children (up to one year), (b) Average size of normal parathyroid gland of 

 adults, (c) Parathyroid gland from a five months old child; the left parathyroids are 

 of normal size, the right are definitely smaller (as a result of hemorrhages), (d) Hy- 

 poplastic parathyroid glands from children with lues hereditaria (four and six weeks 

 old), (e) Hypoplastic parathyroid gland of a twenty-five years old adult with tetany. 

 (Compare with (b).) (After W. Haberfeld, Virchow's Archiv, 1011.) 



round celled infiltration, and ruptured lymph spaces are the findings that 

 have most often been met with. In Europe, Haberfeld (1910-11) has pub- 

 lished important articles on the size (Fig. 16) and the histology of the 

 parathyroid glands in tetany. B. S. Oppenheimer (1911), and Proscher 

 and Diller have, in the United States, made reports upon the pathological 

 histology of the parathyroid glands in tetany. It must be remembered, 



